Specifications

Note: Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.
Commercial/Industrial Water Conditioning & RO Systems
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PURE WATER
Commercial/Industrial Water Conditioning & RO Systems
Reverse Osmosis
Series PWR4021
Commercial Reverse Osmosis Systems
Flow Rates: Up to 10,800 gallons per day (40,878 lpd)
WattsPureWaterSeriesPWR4021ReverseOsmosis(RO)Systemsarecommercialgradehigh-
pressureROunitsforthereductionoftotaldissolvedsolidsfromwater.Theyaredesignedtosupply
reverseosmosisqualitywaterwithproductionratesrangingfrom3,600to10,800gallonsperday.
Theseunitsaredesignedforfloormountinstallations.Reverseosmosisisaprocesswherehigh-pres-
surefeedwaterisfedintoasemi-permeablemembrane.Inthemembrane,purewaterisallowedto
passthroughthemembranematerialandexitaspurifiedpermeatewater.Dissolvedmineralsaltsare
notallowedtopassthroughthemembraneandbecomeaconcentratedrejectstreamthatissentto
drain.TheseROsystemsusehigh-pressure/high-rejectionmembranestoachieveaminimumaverage
NaClionicrejectionof95percent.
TheSeriesPWR4021ROsystemsareawelldesignedruggedlineofpurifiers.Thisseriescomeswith
apre-selectedassortmentoffeatures,includingourdigitalcontroller,formonitoringandoperation.
Stainlesssteelmembranehousings,inletandoutletpre-filterpressuregauges,low-pressureswitch
withdelayedautorestart,inputsfortanklevelandpretreatmentinterlock,conductivitymeter,high
conductivityalarmoutput,adjustablerejectrecycle,permeateandrejectwaterflowmeters,reject
recycleflowmeter,permeatewatercheckvalve,inletsolenoidvalve,membranefeedandrejectwater
pressuregauges,autoflush,andadjustablerejectvalveareallstandardfeatures.Thesesystemsare
designedtofeedanatmosphericstoragetankforcollectionofthereverseosmosiswater.Reverse
osmosiswaterhasawidevarietyofapplicationsincludingmunicipalwatertreatment,steamboiler
andsteamsterilizermakeup,laboratoryuse,spotfreerinsing,iceandbeveragewater,waterfor
cooking,foodprocessing,metalplatingandfinishing,aswellaswaterforhumidification.Reverse
osmosisisalsothepretreatmentofchoiceforionexchangetypede-ionization(DI)systems.Using
ROwaterasmakeuptoaDIsystemreducestheexhaustionrateoftheDIresinbyupto95percent
savingtime,money,andchemicalsassociatedwithDIresinregeneration.
Features
•MembraneAutoFlush
•Powdercoatedcarbonsteel
supportframe
•316Lstainlesssteel300psi
high-pressuremembrane
housings
•Pressuregaugesforpre-lter
inlet/outlet,membranefeed,
andrejectwaterpressure
•Lowfeedwaterpressure
safetyswitch
•Digitalmicroprocessorbased
controllerwithdelayedauto
restartafterlow-pressureshut
down
•Permeatewaterconductivity
meterwithhigh-conductivity
alarmoutput
•Tanklevelandpretreatment
interlockinputs
•High-pressure/high-rejection
membraneswith95%
minimumaveragesalt
rejection
•Permeate,rejectrecycle,and
rejectwaterowmeters
•Adjustablerejectandreject
recyclevalves
•Permeatecheckvalve
•Automaticinletsolenoidvalve
•20"full-owpre-lter
Standards
Pre-lterHousingNSF/ANSI
Certied42
Note:FeedWatermustbe
pretreatedforscaleprevention
(softened),de-chlorinated(car-
bonfilter),andfreeofsediment.
MODEL NO. DESCRIPTION
PWR40213023 3600 GPD Reverse Osmosis System with Micro Processor Control and Auto Flush
PWR40213033 5400 GPD Reverse Osmosis System with Micro Processor Control and Auto Flush
PWR40213043 7200 GPD Reverse Osmosis System with Micro Processor Control and Auto Flush
PWR40213053 9000 GPD Reverse Osmosis System with Micro Processor Control and Auto Flush
PWR40213063 10,800 GPD Reverse Osmosis System with Micro Processor Control and Auto Flush
Ordering Information
PWR4021
Performance
Maximum Productivity (gallons per day) 3600 5400 7200 9000 10,800
Quality (typical membrane percent rejection) 98 %
% Recovery (adjustable) 25 - 75 36 - 75 42 - 75 46 - 75 50 – 75
Membrane Size 4" x 40"
Number Of Membranes 2 3 4 5 6
Prefilter
(systems ship with one 5-micron cartridge)
20" BB
Feed Water Connection 1" FNPT
Product Water Connection
3
⁄4" FNPT
Reject Water Connection
3
⁄4" FNPT
Feed Water Required (GPM at 50% recovery) 5 7.5 10 12.5 15
Feed Water Pressure (minimum) 20 psi
Drain Required (maximum) 15 gpm
Electrical Requirement
(other voltages available)
230 VAC, 3-phase, 60 Hz, 15 amps
Motor Horse Power 5
Dimensions L x W x H (approximate) 60” x 18” x 56”
Shipping Weight (estimated pounds) 400 500 600 700 800
For additional information, access online literature ES-WQ-PWR4021